baber/WOPTO huggingface dataset:
Patent GB-885353-A (GB)
Title: Pressure regulating system
IPC: G05D16/06
Filed: 1959-05-14
Abstract: 885,353. Respiratory appliances. BENDIX CORPORATION. May 6, 1960 [May 14, 1959], No. 16145/60. Class 81 (2). A pressure-regulating arrangement, primarily for use at high altitudes, has an exhaust valve which is biased towards the closed position by a pressure which is increased in accordance with the increase in the internal pressure in the system. The main housing 12 is mounted on the mask 10 and air is admitted to it through a duct 17 leading to a chamber 18, below a main valve 16, but this has a bleed duct 19 leading to the upper face of the diaphragm 16 so that the pressure above it normally holds the valve closed. The interior of the mask, and associated space 28, is connected through a duct 29 to the space 23, below a demand diaphragm 27 and, on inhalation, this diaphragm is deflected downwards so that a lever 25 opens a pilot valve 24 and exhausts the space 20, whereupon the main valve 16 is opened by the supply pressure and oxygen passes to the face mask. In order to increase the mask pressure with increasing altitude a pressure is applied to the outer face of the demand diaphragm 27 by oxygen received through a choke tube 39. At low altitudes this pressure only rises to a value sufficient to raise a valve 43 against a light spring 50 and this ensures that the mask pressure is only slightly above atmospheric, to prevent the admission of external air. At higher altitudes, however, an evacuated aneroid 51 presses with increasing force on the valve 43 and the pressure applied to the diaphragm 27 is increased accordingly. The pressure existing above the diaphragm 27 is also communicated through a duct 65 to a diaphragm 66 which is mechanically connected to the exhaust valve 61. Consequently, at high altitudes, this valve is held closed against the excess mask pressure above ambient pressure and there is no tendency for oxygen to be continuously lost through this valve, but it is merely opened by the additional pressure produced by exhalation. The spring 70 is employed to balance the initial internal pressure at low altitudes, before the aneroid 51 becomes effective.
Patent GB-320127-A (GB)
Title: Improvements in valvular devices
IPC: G05D7/01
Filed: 1928-09-27
Abstract: 320,127. Watson, F. M., and Guest & Chrimes, Ltd. Sept. 27, 1928. Float-valves. - Apparatus for regulating the supply of chemical liquors &c. to a water main &c. by the quantity of liquid passing through the main comprises a float 3 actuated by the differences of pressure at the mouth and throat of a Venturi tube 24 in the main passage 22 and acting through a lever 12 to adjust a valve 18 controlling the supplementary supply flowing into the main through a pipe 21. The float 3 is supported on mercury in a chamber 2 closed to the atmosphere and communicating through a perforated base 8 with an outer closed chamber 5, the chambers communicating respectively through pipes 29, 31 with annular chambers 26, 35 surrounding the throat and mouth of the Venturi tube and with perforations 27, 34 opening thereinto. The float level, depending upon the preponderance of pressure in the outer chamber 5, determines the adjustment of the valve 18, which is supported on a cross bar 16 suspended by links 15 from the end of the lever 12. Specification 3397/10 is referred to.
Patent GB-297153-A (GB)
Title: Improvements in electric regulating systems
IPC: H02P7/26
Filed: 1927-06-17
Abstract: 297,153. Beatty, W. E., (Bell Telephone Laboratories, Inc.). June 17, 1927. Regulation, automatic.-For automatically regulating the speed, frequency or voltage of a dynamoelectric machine 5, shown, as a direct-current motor to be controlled for constant speed, a highfrequency induction-type generator 11 driven by the motor is connected through a low-pass filter 20 to the anode of a thermionic valve 21 which varies the grid potential of an amplifier A which discharges through a regulating field winding 10. In starting from rest, the motor has an initial armature resistance 9 which at a given speed is automatically shorted by a bridge-connected magnet 53, a switch being simultaneously closed whereby tappings from the motor armature feed alternating current to a transformer 30 for the purpose of supplying filament current to the valves. When the speed rises to the value corresponding to the frequency of the low-pass filter further rise is prevented by the sudden fall in the filter transmission and the consequent sudden increase in the discharge of the amplifier to the field-winding 10. By means of a suitable network of resistances 39, 40, 41 and a condenser 42, a delayed effect is caused to take place upon the grid of the valve 21 in a direction tending to prevent over-regulation or hunting. Specification 275,784 is referred to.
Patent GB-1267936-A (GB)
Title: DERIVATIVES OF alpha-AMINOPENICILLINS
Inventor: NAYLER JOHN HERBERT CHARLES
IPC: C07D499/00
Filed: 1970-04-07
Abstract: 1,267,936. Derivatives of α-amino penicillins. BEECHAM GROUP Ltd. 26 May, 1970 [28 May, 1969; 7 April, 1970], Nos. 26898/69 and 16292/70. Heading C2A. α-Aminopenicillin derivatives of the general formulµ where R is an alkyl, cycloalkyl, alkenyl, cycloalkenyl, aralkyl, aryl or heterocyclic group which may be substituted, and where in (I) X is NH 2 , optionally in the form of an acid addition salt, or a protected amino group of the general formulae or tautomeric modifications thereof, wherein the dotted lines represent hydrogen bonds, R<SP>1</SP> is C 1-6  alkyl, R<SP>2</SP> is either H or together with R<SP>1</SP> completes a carbocyclic ring, R is C 1-6  alkyl or alkoxy, and Z represents the residue of a substituted or unsubstituted benzene or naphthalene ring, may be prepared (a) by reacting a salt of a penicillanic acid of formulae with an acyloxymethyl compound of formula Y.CH 2 O.COR, wherein Y is Br or Cl, in an organic solvent which may optionally contain a small amount of water or (b) by reacting an acyloxymethyl-6-aminopenicillanate of formula with a carboxyl activated derivative of a carboxylic acid of formula wherein M represents an amino group, a protected amino group or a group which may subsequently be converted to an amino group, and then when M is not an amino group or a group of Formula III or IV, converting it to such a group. The phenolic hydroxyl group in the carboxy activated derivative of the acid of Formula IX may be protected during the reaction with the acyloxymethyl 6-aminopenicillanate, and the protecting group is subsequently removed. Preferaby M is an amino group protected by protonation or with a benzyloxycarbonyl group or is an azido group. The carboxyl activated derivative of the carboxylic acid of Formula IX may be a halide, anhydride or mixed anhydride. Specified derivatives include pivaloyloxymethyl 6 - [(-) α - amino - α - (p - hydroxyphenyl)- acetamido] penicillanate, pivaloyloxymethyl 6 - [2,2 - dimethyl - 5 - oxo - 4 - (p - hydroxyphenyl) - 1 - imidazolidinyl] penicillanate, acetoxymethyl 6 (-) α - amino - α - (p - hydroxyphenyl) acetamido] penicillanate and acetoxymethyl 6 [2,2 - dimethyl - 5 - oxo - 4 - (phydroxyphenyl) - 1 - imidazolidinyl] penicillanate. The above α-aminopenicillin derivatives of the general Formulµ I and II are active against Gram-positive and Gram-negative bacteria and are useful as antibacterial agents, nutritional supplements in animal foods and as therapeutic agents in the treatment of mastitis.
Patent GB-186663-A (GB)
Title: Improved device for testing high tension sparking plugs, magnetos and coils
IPC: H01T13/58
Filed: 1921-09-26
Abstract: 186,663. Jennison, J. J., and Greenhalgh, F. Sept. 26, 1921. Vacuum tubes.-In devices of the kind comprising a vacuum bulb having a single electrode connected to an exterior contact, for testing sparking-plugs, magnetos, &c., the bulb A is enclosed in a bare metal cap F formed with an opening at the front and earthed. A protective casing is provided and comprises a base portion G<1> in which the bulb is secured with its contact C exposed, and an upper removable part G screwed to the base portion. A set of bulbs may be fitted on the dash-board of a car and permanently connected one to each sparking-plug.
Patent GB-163015-A (GB)
Abstract: 163,015. Liese, H. [Firm of]. May 6, 1920, [Convention date]. Electrically-actuated valves.-A throttle valve 98 in meter apparatus for gases, vapours, and liquids, is actuated by an electromotor 94 or 95 which is controlled by switches actuated by a tilting vessel 93 receiving and discharging liquids. Specification 21235/13 is referred.
Patent GB-606119-A (GB)
Title: Improvements in or relating to moulding materials
IPC: B22C1/18
Filed: 1945-06-26
Abstract: A shaped article is made by mixing together sodium silicofluoride, sodium silicate having a silica-sodium oxide ratio not less than 3.3:1, and a filler inert to sodium silicate, allowing the product to set, and then heating to expel water and effect hardening.  The mix may be made by adding the filler to a solution of sodium silicate and adding the sodium silicofluoride when the required consistency has been obtained; adding a mixture of filler and sodium silicofluoride to a solution of sodium silicate to form a slurry; or by adding the filler and sodium silicofluoride to powdered sodium silicate and then adding sufficient water.  The mix may be poured or rammed according to the consistency and the desired product.  The filler used is determined by the intended use of the product, e.g. sand for production of articles such as patterns, core trays, mould parts or the like to withstand temperatures up to 350 DEG C.; fused silica, graded if desired, or a mixture of silica and zirconia or zirconium silicate for high-temperature purposes; asbestos, alumina, or mica for heat-insulating purposes; graphite when electric conducting properties are required; oxidizing substances such as manganese dioxide, or such substances as calcium carbonate or sodium fluoride for use in degassing, cleaning, and refining metals; a heat-producing mixture, e.g. of iron oxide and aluminium for the purpose of keeping a metal liquid in a mould; or sawdust or like combustible material or a chemical containing water of crystallization for introducing a gas into a molten metal.
Patent GB-1527561-A (GB)
Title: Substituted-alkyl 2-cyanoacrylates and their use as surgical adhesives
IPC: C07C255/45
Filed: 1976-04-22
Abstract: 1527561 Substituted alkyl 2-cyanoacrylates ETHICON Inc 22 April 1976 [23 April 1975] 16339/76 Heading C2C [Also in Division C3] The invention comprises compounds of the general formula wherein R is a (C 1 -C 12 ) organic radical and each R<SP>1</SP> is H or CH 3 , their preparation and use in biological adhesive compositions.
Patent GB-1004615-A (GB)
Title: Improvements in or relating to moving object detection systems
Inventor: NICHOLLS MALCOLM ROBERT
IPC: G01S15/52
Filed: 1962-04-30
Abstract: 1,004,615. Intruder alarm systems. DECCA Ltd. July 25, 1963 [April 30, 1962], No 16364/62. Heading G4N. [Also in Division H4] A moving object detection system comprises a transmitter 11 arranged to radiate continuous or modulated ultrasonic signals, a receiver 12 arranged to receive echoes of such signals, a phase-sensitive detector 14 arranged to give an output representative of the phase of the received signals compared with the phase of the radiated signals and means for indicating any variations in the output of the phase-sensitive detector due to moving objects. Substantially the whole subject-matter of this Specification is contained within Specification 1,004,614, but whereas the latter Specification describes and claims the arrangement of the transmitting and receiving transducers, this Specification describes and claims the phase-sensitive detector as shown in Fig. 2. The signal from the amplifier 13 is fed through a capacitor 15 to the collector of a transistor 16 and a continuous wave reference signal, in fixed phase relationship with the ultrasonic frequency output of the transducer 11 from the oscillator 10, is applied to the base of this transistor. The reference signal is arranged to switch the transistor 16 on and off for alternate half-cycles, and thus the output across the collector-to-emitter circuit depends on the phase relationship between the applied signals from the amplifier 13 and the reference signal. This output is passed through a low-pass filter consisting of series resistors 18, 19 and a shunt capacitor 20 and is fed through a capacitor 21 to a low-frequency amplifier 22 (Fig. 1). In a pulse modulated system it is necessary to generate a reference signal for controlling the phase-sensitive detector representative of the phase of the ultrasonic oscillations in the radiated pulses, the amplitude of which must be sufficient to switch the transistor 16. Further if the received signals drive the transistor into a limiting condition rectangular output pulses are formed which will in affect be pulse width and polarity modulated with the modulation representing the required phase. The indicating means comprise a filter 24 for removing the high frequency components to provide a lowfrequency signal which actuates a visual or audible alarm 27. The output from the filter depends on all the various fixed objects and any change in this output indicates the presence of a moving object. The indicator may be made responsive only to changes in the output of filter 24, or in some cases it may indicate the total output of the filter, which if it had a magnitude different from normal would indicate the presence of an abnormal fixed object. The phase-sensitive detector may comprise a half-wave or full wave rectifier which is switohable on and off at the reference signal frequency.
Patent GB-203782-A (GB)
Title: Improvements in electrical connections between relativelymoving conductors
IPC: H01R39/00
Filed: 1922-06-13
Abstract: 203,782. White, A. E., (Elyria Iron & Steel Co.). June 13, 1922. Brush-holders.-A collector brush structure for connecting two relatively movable opposed contact surhces comprises a brush member longer than the distance between the surfaces and free at its end. Figs. 2 and 4 show a construction adapted for connecting two opposed plane surfaces 11, 13. The brushes 14, each comprising a bundle of thin copper laminae disposed between spring strips 16 of phosphor bronze, are placed in a holder formed of two relatively-adjustable rings 18, 19 provided with studs 20, 21. Each stud 20 bears against one face of a brush near one end and each stud 21 bears against the other face of a brush near the other end. The spacing of the rings 18, 19 is adjusted e.g. by set-screws 24. Figs. 6 and 7 show a construction adapted for connecting two opposed concentric cylindrical surfaces 11<1>, 13'. The studs 20<1>, 21<1> for positioning the brushes 14' project horizontally from rings 18<1>, 19<1> which are relatively adjustable when a set-screw 28 is slackened. The invention is particularly applicable for conveying current between a fixed secondary terminal of an electric transformer and a rotatable electrode for electric welding.
Patent GB-719222-A (GB)
Title: Improvements in or relating to fluid-tight sealing devices for rotating shafts and the like
IPC: F16J15/54
Filed: 1951-07-11
Abstract: 719,222. Stuffing-box substitutes. BRITISH HYDROMECHANICS RESEARCH ASSOCIATION, and DENNY, D. F. June 30, 1952 [July 11, 1951], No. 16475/51. Class 122(5) A sealing arrangement between relatively rotatable inner and outer members comprises a sealing ring secured in fluid-tight manner to a surface on the outer member and in sealing rubbing contact with a land surface on the inner member which is constructed in two parts, one surrounding the other, attached together by means preventing relative rotational movement therebetween but permitting limited radial movement, the outer part providing the land surface being constrained to run true to the aforesaid surface of the outer member. A rotatable shaft 12 is sealed by a unit mounted in a recess 14 in the shaft housing and comprising a casing 15 containing a flexible lip type seal, a ball bearing 16, and a sleeve 11 which loosely surrounds the shaft and is resiliently supported thereon by a rubber ring 13, which may be bonded to the sleeve and the shaft. The holding flange 17a of the seal is held against the inner surface of the casing 15 and the lip 17b sealingly contacts the sleeve 11 constrained by the bearing 16 to run true to the inner surface of the casing. In a modification the sleeve 11 has an integral radial flange and an end face of an annular ring of rigid material is spring-urged into sealing contact with the radial flange. In another modification (Fig. 3) a sleeve 51 loosely surrounds a shaft 52 and is driven therefrom by a rubber tube 53, one end of which is secured to the sleeve and the other end is secured to a collar on the shaft. The sleeve 51, which may be diametrically split, is sealed by a normal stuffing-box, the packing 56 serving to constrain the sleeve to run true to the stuffing-box recess.
Patent GB-691891-A (GB)
Title: Improvements relating to suction cleaners
IPC: A47L5/32
Filed: 1951-07-12
Abstract: 691,891. Suction cleaners. HOOVER, Ltd. July 12, 1951 [July 13, 1950], No. 16518/51 Class 8 (i). In a suction cleaner of the handle propelled type having a port 60 Fig. 1 for the insertion of a converter 61 Fig. 2 for off-the-floor cleaning and means for adjusting the height of the nozzle 2 above the floor to a number of positions including an inoperative position, the port 60 has a cover 65 which may be locked against movement to its open position except when the nozzle height adjusting means is positioned to raise the nozzle to its inoperative position. Nozzle height adjustment is effected by vertical displacement of the cleaner body 1 relative to front wheels 22. To this end a shaft 23 about which the front wheels 22 are freely rotatable is carried by upwardly spring biased arms 24 pivoted on body studs 25, and cams 27 rigidly secured to the shaft 23 and having surfaces a, b, c, d at increasing radial distances from the shaft axis engage body brackets 29 to give one of four nozzle settings viz., "thin," "medium, "thick," or "converter" as indicated on a drum 51. The cams 27 are rotated clockwise by adjustment of the shaft 23 which carries a four-toothed rachet 31 actuated by a pawl 32 pivotally carried by a slide bar 33 itself actuated by a pedal operated bell crank 45 against a spring 43. The indicating drum shaft 51a is rotated by a rachet 53 secured thereto and actuated by a pawl 54 carried by the bar 33. The operative connection between the cover 65 which is pivoted about a spindle 67 comprises a cranked end 68 of the spindle which engages the long arm of a spring-biased bell crank 69 pivoted to a boss 70 and having its short arm displaced by a pin 71 engaging a slot in a link 73 encircling the shaft 23. Normally the cranked end 68 is prevented from rotating clockwise to open the cover 65 by the long arm of a bell crank 78 pivoted on a boss stud 79. Complete depression of the link 73 however which occurs on moving the bar 33 to the "converter" position shown removes the lock and allows the cover 65 to be opened by the bell crank 69. To prevent actuation of the pedal 47 when the converter is in use the bar 33 carries a tongue 86 which abuts a barrier 85 swung into position on inserting the converter.
Patent GB-1062544-A (GB)
Title: Process for deoiling a paraffinic wax
IPC: C10G73/06
Filed: 1965-04-20
Abstract: A paraffinic wax is de-oiled by cooling to its cloud point, further cooling by the addition of cold filtrate, passing the cooled wax/filtrate mixture to a crystallization zone and subsequently to a filtration zone, introducing deoiling solvent into the filtration zone as a washing liquid, recovering a liquid filtrate containing solvent, and solid wax, from the filtration zone, and recycling at least part of the filtrate for adding to the oily wax.  The "cloud point" is the temperature at which solid wax starts to precipitate from the oily wax.  Various deoiling solvents are listed, a 2: 1 by volume mixture of methyl ethyl ketone <FORM:1062544/C4-C5/1> and toluene being preferred.  Oily wax from 1 is water cooled in 5, mixed with cold filtrate from 32 and passed through crystallization zones 9, 11; cooled slurry from 11 is filtered at 13, 15 with the addition of fresh solvent from 41, and deoiled wax is withdrawn at 28.
Patent GB-577140-A (GB)
Title: Improvements in flushing cisterns
IPC: E03D1/10
Filed: 1943-10-12
Abstract: 577,140. Water-waste preventers. SHAW, A. G., and SHAW'S GLAZED BRICK CO., Ltd. Oct. 12, 1943, No. 16701. [Class 26] A flushing cistern comprises an outer shell 1 with an integral secondary chamber 7 accommodating means 6 to start the siphoning action, said secondary chamber having an integral duct 8 adapted to transfer the water from the secondary chamber to the discharge opening 16, said chamber being in permanent communication at its lower part, through an opening 7a, with the interior of the shell 1 and being fitted at its top with a cap 12 also covering the upper end of the duct 8 and shaped to form a leg or bend connecting the upper parts of the duct and chamber. The duct may be formed in each of a pair of hollow radial wings 9, the two branches of the duct uniting in a common outlet beneath the chamber, as shown in Figs. 1 and 2, or the duct may be formed in a single bay at the front of the cistern, as shown in Figs. 4 and 7, the former of these Figures showing an arrangement suitable for a low flush cistern, and the latter an arrangement for flushing the wall 27 of a urinal.
Patent GB-585479-A (GB)
Title: Improvements in structures for display
IPC: E06B1/38
Filed: 1944-09-01
Abstract: 585,479. Shop-fronts. PETERKEN, E. Sept. 1, 1944, Nos. 16734 and 25432. Addition to 562,134. [Classes 20 (iii) and 20 (iv)] The invention described in the parent Specification is extended in application to display or exhibition stands, show cases, display cabinets &c. and in form by the inclusion of panels, tiles &c. as facing strips for the stall riser and facia, and by the provision of a metal fillet, for securing the facing strips, having an inwardly extending tongue whereby it is secured. Fig. 2 shows such a fillet N, which is secured to the horizontal (comprising a pair of timbers H') by bolts passing through both halves of the horizontal and through the tongue N'. At the base of the stall riser, the filllet may be L-shaped as shown. In the form shown in Fig. 5, the part N is sufficiently substantial to form the main horizontal support, and the tongue N<1> is attached to the vertical posts I by single-pin connection to brackets of plate form having lugs secured in the base of a recess in the posts. Adjustable abutment plates P close any gaps between the ends of the bars N and the posts I. The facing strips M may be opaque tiles or in the stall riser may comprise a subdisplay portion of transparent tiles edged by a diffused lighting zone of translucent tiles.